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Forums >> Revit Building >> Technical Support >> head height of window

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Thu, Nov 3, 2005 at 12:27:31 AM | head height of window




Joined: Sat, Aug 6, 2005
241 Posts
3 Stars: 1 Votes

We have a window family where the distance from the opening sill to the actual window sill is 4 3/4." It looks like Revit adds the opening "sill height" parameter plus the window "height" parameter to arrive at a "head height" parameter. This is a problem for us because we end up with 4 3/4" unaccounted for. ie. The acutal head height is 4 3/4" higher than the parameter expresses. We tried adding a Head Height instance parameter but all it does is creates a duplicate "Head Height" parameter beside the given "head height" parameter. Any ideas how we can get the Head height to read correctly? I guess the only way I can think of is to construct a window so that the opening "sill height" and window "sill height" are at the same elevation.

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Thu, Nov 3, 2005 at 2:36:52 PM | RE: head height of window



latemore Avatar

Joined: Mon, Mar 28, 2005
208 Posts
3 Stars: 2 Votes

not sure if this will help. we are still learning lots about familys but we have learnt to watch which reference plane 'defines origin'. we changed some of our own windows to have defines origin on the head, but that was not a good idea. reverted to sill, and all was well. have a look at your references. maybe mr spot can help out more.

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Thu, Nov 3, 2005 at 11:19:14 PM | RE: head height of window


Mr Spot

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Joined: Tue, Jan 13, 2004
2889 Posts
4.5 Stars: 93 Votes

Best bet would be to reconstruct the window so the window itself starts on the sill level. The opening would then be your 4 3/4" below the sill in elevation... This shouldn't be too hard to modify. Just a matter of unconstraining a few elements, moving them and reconstraining them. It is also possible to redefine a windows to be placed and positioned by their head height as latemore alludes to. But it involves changing all your windows as it would be confusing to have some one way and the rest the other. HTH.

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